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inysia [295]
3 years ago
13

10 people in a room each person shakes hands with every other person in the room exactly once how many handshakes will there be

Mathematics
2 answers:
Elena L [17]3 years ago
8 0

Answer:

50

Step-by-step explanation:

Since it is every other person the answer upon me is 50

Alex73 [517]3 years ago
4 0
There will be 100 hand shakes because you would do 10x10 which is 100
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Help would be appreciated​
Vesnalui [34]

Answer:

<u>5x+10</u>

27x

Step-by-step explanation:

cross multiply

4 0
3 years ago
the sum of three numbers is 79. The second number is 5 times the first, while the third is 16 more than the first. Find the numb
swat32
Let the 1st number be x; 2nd number be y; 3rd number be z.

x + y + z = 79

x = number we are looking for.
y = x * 5 ==> 5 times the first
z = x + 16 ==> 16 more than the first

Therefor,

x + (x * 5) + (x+16) = 79

1st step, multiply the 2nd number: x * 5 = 5x

x + 5x + x + 16 = 79

Add all like numbers:

7x + 16 = 79

To get x, transfer 16 to the other side and change its sign from positive to negative.

7x = 79 - 16
7x = 63

To get x, divide both sides by 7

7x/7 = 63/7
x = 9

To check. Substitute x by 9.

x + (x * 5) + (x+16) = 79

9 + (9 * 5) + (9 + 16) = 79
9 + 45 + 25 = 79
79 = 79 equal. value of x is correct.

3 0
3 years ago
Answer true or false for them all<br> thanks
denpristay [2]
First 2 are true and others are false

5 0
3 years ago
a train moves at a constant speed. it can travel 150 miles in 2 1/2 hours. how long will it take for the train to travel 360 mil
Leno4ka [110]

Answer:

It would equal 6 hours

Step-by-step explanation: you would have to divide 150 and 2 1/2 and get 60 then dovide by 360 and you will get 6 as in 6 hours

8 0
2 years ago
20 points! Which graph represents two functions that are decreasing on all points across the domain that is common to both funct
Romashka [77]
First graph: h(x) is decreasing but in [1, too) , is rising
D(x) is decreasing
5 0
1 year ago
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